Chrysanthemum plant named ‘G20POS01WH’

ABSTRACT

A new and distinct cultivar of  Chrysanthemum  plant named ‘G20POS01WH’, characterized by its upright, outwardly spreading and uniformly rounded plant habit; moderately vigorous growth habit; freely branching habit; dense and full plant habit; flexible stems; dark green-colored leaves; uniform and freely flowering habit; long flowering period; spider decorative-type inflorescences with quilled ray florets that are initially light pale yellow becoming white in color with development; and excellent garden performance.

Botanical designation: Chrysanthemum X morifolium.

Cultivar denomination: ‘G20POS01WH’.

CROSS-REFERENCED TO CLOSELY-RELATED APPLICATIONS

Title: Chrysanthemum Plant Named ‘G21POS04YE’

Applicant: Elien Sofie Pieters

Filed: Concurrently with the instant application having application Ser. No. 16/873,479

STATEMENT REGARDING PRIOR DISCLOSURES BY INVENTOR/APPLICANT

An European Community Plant Breeder's Rights application for the instant plant was filed by the Assignee, Paraty B. V. B. A. of Oostnieuwkerke, Belgium, on Jan. 24, 2019, application number 2019/0233. Foreign priority is not claimed to this application.

There have been no offers for sale anywhere in the world prior to the effective filing date of this Application and no accessibility to one of ordinary skill in the art could have been derived from the printed Plant Breeder's Rights documents.

The Inventor/Applicant asserts that no publications nor advertisements relating to sales, offers for sale or public distribution occurred more than one year prior to the effective filing date of this application. Any information about the claimed plant would have been obtained from a direct or indirect disclosure from the Inventor. Applicant claims a prior art exemption under 35 U.S.C. 102(b)(1) for disclosure and/or sales prior to the filing date but less than one year prior to the effective filing date.

BACKGROUND OF THE INVENTION

The present invention relates to a new and distinct cultivar of Chrysanthemum plant, botanically known as Chrysanthemum X morifolium and hereinafter referred to by the name ‘G20POS01WH’.

The new Chrysanthemum plant is a product of a planned breeding program conducted by the Inventor in Oostnieuwkerke, Belgium. The objective of the breeding program is to create new uniformly mounding and freely flowering Chrysanthemum plants with unique and attractive inflorescence form and ray floret coloration.

The new Chrysanthemum plant originated from a cross-pollination made by the Inventor in Oostnieuwkerke, Belgium in October, 2013 of a proprietary selection of Chrysanthemum X morifolium identified as code number G11-2105, not patented, as the female, or seed, parent with Chrysanthemum X morifolium ‘Wikita White’, not patented, as the male, or pollen, parent. The new Chrysanthemum plant was discovered and selected by the Inventor as a flowering plant from within the progeny of the stated cross-pollination in a controlled greenhouse environment in Oostnieuwkerke, Belgium in October, 2014.

Asexual reproduction of the new Chrysanthemum plant by vegetative terminal cuttings was first conducted in a controlled greenhouse environment in Oostnieuwkerke, Belgium in January, 2015. Asexual reproduction by vegetative terminal cuttings has shown that the unique features of this new Chrysanthemum plant are stable and reproduced true to type in successive generations.

SUMMARY OF THE INVENTION

The following traits have been repeatedly observed and are determined to be the unique characteristics of ‘G20POS01WH’. These characteristics in combination distinguish ‘G20POS01WH’ as anew and distinct Chrysanthemum plant:

-   -   1. Upright, outwardly spreading and uniformly rounded plant         habit; moderately vigorous growth habit.     -   2. Freely branching habit; dense and full plant habit; flexible         stems.     -   3. Dark green-colored leaves.     -   4. Uniform and freely flowering habit.     -   5. Long flowering period.     -   6. Spider decorative-type inflorescences with quilled ray         florets that are initially light pale yellow becoming white in         color with development.     -   7. Excellent garden performance.

Plants of the new Chrysanthemum can be compared to plants of the female parent selection. Plants of the new Chrysanthemum differ primarily from plants of the female parent selection in the following characteristics:

-   -   1. Plants of the new Chrysanthemum are more uniformly rounded in         plant shape than plants of the female parent selection.     -   2. Plants of the new Chrysanthemum flower about two weeks         earlier than plants of the female parent selection.     -   3. Ray florets of plants of the new Chrysanthemum are light pale         yellow becoming white in color with development whereas ray         florets of plants of the female parent selection are pink in         color.

Plants of the new Chrysanthemum can be compared to plants of the male parent, ‘Wikita White’. Plants of the new Chrysanthemum differ primarily from plants of ‘Wikita White’ in the following characteristics:

-   -   1. Plants of the new Chrysanthemum are more vigorous and         stronger than plants of ‘Wikita White’.     -   2. Plants of the new Chrysanthemum flower about one week later         than plants of ‘Wikita White’.     -   3. Inflorescences of plants of the new Chrysanthemum are         stronger with tighter quilled ray florets than inflorescences of         plants of ‘Wikita White’.

Plants of the new Chrysanthemum can be compared to plants of the Chrysanthemum X morifolium ‘G21POS04YE’, disclosed in a U.S. Plant Patent application filed concurrently having application Ser. No. 16/873,479. In side-by-side comparisons, plants of the new Chrysanthemum differ primarily from plants of ‘G21POS04YE’ in ray floret color as ray florets of plants of the new Chrysanthemum are light pale yellow becoming white with development in color whereas ray florets of plants of ‘G21POS04YE’ are bright yellow in color.

Plants of the new Chrysanthemum can also be compared to plants of Chrysanthemum X morifolium ‘Gedi Three Mil’, disclosed in U.S. Plant Pat. No. 16,843. In side-by-side comparisons, plants of the new Chrysanthemum differ primarily from plants of ‘Gedi Three Mil’ in the following characteristics:

-   -   1. Plants of the new Chrysanthemum are more uniformly rounded in         plant shape than plants of ‘Gedi Three Mil’.     -   2. Leaves of plants of the new Chrysanthemum are brighter green         in color and narrower than leaves of plants of ‘Gedi Three Mil’.     -   3. Ray florets of plants of the new Chrysanthemum are quilled         whereas ray florets of plants of ‘Gedi Three Mil’ are oblong to         ligulate in shape.     -   4. Ray florets of plants of the new Chrysanthemum are light pale         yellow becoming white with development in color whereas ray         florets of plants of ‘Gedi Three Mil’ are white in color.

BRIEF DESCRIPTION OF THE PHOTOGRAPH

The accompanying photograph illustrates the overall appearance of the new Chrysanthemum plant showing the colors as true as it is reasonably possible to obtain in colored reproductions of this type. The photograph comprises a side perspective view of a typical flowering plant of ‘G20POS01WH’ grown in a container.

DETAILED BOTANICAL DESCRIPTION

The aforementioned photograph and following observations and measurements describe plants grown in 19-cm containers in an outdoor nursery in Oostnieuwkerke, Belgium under natural daylengths during the autumn and under cultural practices generally used in commercial Chrysanthemum production. During the production of the plants, day temperatures ranged from 20° C. to 25° C. and night temperatures ranged from 12° C. to 18° C. Plants were 20 weeks old when the photograph and detailed description were taken. In the following description, color references are made to The Royal Horticultural Society Colour Chart, 2015 Edition, except where general terms of ordinary dictionary significance are used.

-   Botanical classification: Chrysanthemum X morifolium ‘G20POS01WH’. -   Parentage:     -   -   Female, or seed, parent.—Proprietary selection of             Chrysanthemum X morifolium identified as code number             G11-2105, not patented.         -   Male, or pollen, parent.—Chrysanthemum X morifolium ‘Wikita             White’, not patented. -   Propagation:     -   -   Type cutting.—By vegetative tip cuttings.         -   Time to initiate roots, summer.—About two weeks at             temperatures about 20° C.         -   Time to initiate roots, winter.—About 20 days at             temperatures about 20° C.         -   Time to produce a rooted young plant, summer.—About 30 days             at temperatures about 20° C.         -   Time to produce a rooted young plant, winter.—About 40 days             at temperatures about 20° C.         -   Root description.—Fine, fibrous; typically light brown in             color, actual color of the roots is dependent on substrate             composition, water quality, fertilizer type and formulation,             substrate temperature and physiological age of roots.         -   Rooting habit.—Freely branching; medium density. -   Plant description:     -   -   Appearance.—Perennial spider-type Chrysanthemum with quilled             ray florets; stems upright and outwardly spreading giving a             uniformly rounded appearance to the plant; plants roughly             spherical; very freely branching habit, about 25 to 30             primary lateral branches develop, each primary lateral             branch with multiple secondary branches; pinching enhances             lateral branch development; dense and full plant habit;             moderately vigorous growth habit; moderate growth rate;             plants flexible, not brittle.         -   Plant height.—About 40 cm.         -   Plant width.—About 50 cm.         -   Lateral branches.—Length: About 25 cm. Diameter: About 2 mm             to 3 mm. Internode length: About 2 cm. Strength: Moderately             strong, flexible. Texture: Pubescent, fine; longitudinally             ridged. Color: Close to 147C.         -   Leaves.—Arrangement: Alternate, simple. Length: About 3 cm             to 5 cm. Width: About 2.5 cm to 3 cm. Apex: Rounded to             cuspidate. Base: Attenuate. Margin: Palmately lobed and             serrate, sinuses between lateral lobes divergent to             parallel. Texture, upper and lower surfaces: Slightly             pubescent. Venation: Palmately reticulate. Color: Developing             leaves, upper surface: Close to 137C. Developing leaves,             lower surface: Close to 137D. Fully expanded leaves, upper             surface: Close to N137C; venation, close to 148C. Fully             expanded leaves, lower surface: Close to 147B; venation,             close to 147B to 147C. Petioles: Length: About 1 cm.             Diameter: About 2 mm. Texture, upper and lower surfaces:             Slightly pubescent; slightly rough. Color, upper surface:             Close to 146C. Color, lower surface: Close to 146D.             Stipules: Length: About 1 cm. Diameter: About 2 mm. Texture,             upper and lower surfaces: Slightly pubescent. Color, upper             and lower surfaces: Close to 137A. -   Inflorescence description:     -   -   Appearance.—Spider decorative-type inflorescence form;             inflorescences borne on terminals above foliar plane; disc             and ray florets arranged acropetally on a capitulum.         -   Fragrance.—Slightly fragrant, pungent.         -   Flowering response.—Under natural season conditions, plants             flower in late September in Belgium; flowering response             time, about 35 days.         -   Postproduction longevity.—Inflorescences maintain good color             and substance for about 42 days; inflorescences persistent.         -   Quantity of inflorescences.—About 30 to 35 inflorescences             develop per lateral branch.         -   Inflorescence buds.—Height: About 8 mm. Diameter: About             1.3 cm. Shape: Globular. Color: Close to 4D.         -   Inflorescence diameter.—About 5 cm.         -   Inflorescence depth (height).—About 3.5 cm.         -   Disc diameter.—About 3 mm; inconspicuous.         -   Receptacle diameter.—About 3 mm.         -   Receptacle height.—About 2.5 mm to 3 mm.         -   Receptacle color.—Close to 144B.         -   Ray florets.—Number of ray florets per inflorescence: About             150 to 200 arranged in about ten whorls. Length: About 3.5             cm to 5 cm. Width: About 7 mm. Shape: Quilled, tubular.             Apex: Rounded. Base: Fused. Aspect: Mostly horizontal.             Texture and luster, upper and lower surfaces: Smooth,             glabrous; matte. Color: When opening, upper and lower             surfaces: Close to 4D. Fully opened, upper and lower             surfaces: Close to 155B; venation, close to 155B; color does             not change with development.         -   Disc florets.—Number of disc florets per inflorescence:             About 20 massed at the center of the inflorescence. Length:             About 3 mm. Diameter: About 0.5 mm to 1 mm. Shape: Tubular;             apices dentate. Texture and luster: Smooth, glabrous;             glossy. Color, immature: Close to 145A. Color, mature: Close             to 12A.         -   Phyllaries.—Number of phyllaries per inflorescence: About 25             arranged in two or three whorls. Length: About 4 mm to 6 mm.             Width: About 2 mm to 3 mm. Shape: Ovate. Apex: Rounded.             Base: Rounded to truncate. Margin: Entire. Texture, upper             and lower surfaces: Smooth, glabrous. Color, upper surface:             Close to 137A. Color, lower surface: Close to N137B.         -   Peduncles.—Length, terminal peduncle: About 5 cm. Length,             fourth peduncle: About 5 cm. Length, seventh peduncle: About             5 cm. Diameter: About 2 mm. Angle: About 30° from vertical.             Strength: Moderately strong. Texture: Slightly pubescent.             Color: Close to 147C.         -   Reproductive organs.—Androecium: Stamen development has not             been observed on inflorescences of the new Chrysanthemum.             Gynoecium: Pistil development has not been observed on             inflorescences of the new Chrysanthemum.         -   Seeds and fruits.—To date seed and fruit production have not             been observed on plants of the new Chrysanthemum. -   Garden performance: Plants of the new Chrysanthemum have     demonstrated excellent garden performance and will tolerate     temperatures ranging from about 1° C. to about 45° C. 

It is claimed:
 1. A new and distinct Chrysanthemum plant named ‘G20POS01WH’ as illustrated and described. 